1. Peter can't make a shelf. Can Peter make a shelf?
2. Ann could not go there yesterday. Could Ann go there yesterday?
3. His friends will not be able to help him on sunday. Will his friends be able to help him on Sunday?
4. Our pupils can't read and speak English. Can our pupils read and speak English?
5. The tourists will not be able to reach the village before dark. Will the tourists be able to reach the village before dark?
6. I can't show you the way to the park. Can I show you the way to the park?
7. He could not buy the tickets beforehand. Could he buy the tickets beforehand?
8. You will not be able to catch the train. Will you be able to catch the train?